src/third_party/mozjs-45/js/src/tests/test262/ch11/11.6/11.6.1/S11.6.1_A3.2_T1.2.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/**
 * If Type(Primitive(x)) is String or Type(Primitive(y)) is String, then operator x + y returns the result of concatenating ToString(x) followed by ToString(y)
 *
 * @path ch11/11.6/11.6.1/S11.6.1_A3.2_T1.2.js
 * @description Type(Primitive(x)) and Type(Primitive(y)) vary between Object object and Function object
 */

//CHECK#1
if (({} + function(){return 1}) !== ({}.toString() + function(){return 1}.toString())) {
  $ERROR('#1: ({} + function(){return 1}) === ({}.toString() + function(){return 1}.toString()). Actual: ' + (({} + function(){return 1})));
}

//CHECK#2
if ((function(){return 1} + {}) !== (function(){return 1}.toString() + {}.toString())) {
  $ERROR('#2: (function(){return 1} + {}) === (function(){return 1}.toString() + {}.toString()). Actual: ' + ((function(){return 1} + {})));
}

//CHECK#3
if ((function(){return 1} + function(){return 1}) !== (function(){return 1}.toString() + function(){return 1}.toString())) {
  $ERROR('#3: (function(){return 1} + function(){return 1}) === (function(){return 1}.toString() + function(){return 1}.toString()). Actual: ' + ((function(){return 1} + function(){return 1})));
}

//CHECK#4
if (({} + {}) !== ({}.toString() + {}.toString())) {
  $ERROR('#4: ({} + {}) === ({}.toString() + {}.toString()). Actual: ' + (({} + {})));
}